package com.example.demo.customer;

import com.example.demo.exception.NotFoundException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Objects;

@Service
public class CustomerService {
    private final static Logger LOGGER= (Logger) LoggerFactory.getLogger(CustomerService.class);
    private  final CustomerRepository customerRepository;
    @Autowired
    public CustomerService(CustomerRepository customerRepository){
        this.customerRepository=customerRepository;
    }
    List<Customer>getCustomers(){
    return customerRepository.findAll();
    }
    List<Customer> getCustomer(){
        LOGGER.info("getCustomer called");
        return customerRepository.findAll();
    }
    Customer getCustomer(Long id){
        return customerRepository
                .findById(id)
                .orElseThrow(() ->{
                    NotFoundException notFoundException=new NotFoundException("customer"+id+"无法找到");
                    LOGGER.error("error：getCustomer{}"+id,notFoundException);
                    return notFoundException;
                });
    }

}


